performTransaction() returns true on success. Fixes most of the schedule menu actions.
performTransaction() returns true on success. Fixes most of the schedule
menu actions.

Kolab issue 3326

svn path=/branches/kdepim/enterprise/kdepim/; revision=898613

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi